Checkout Zero — Kit 11

Theme: Market Peach (light, warm) · Audience: first-week supermarket cashiers · Artifacts: register.html (2D) · 3d.html + register.js (3D lane) · shared data checkout-data.js

One-line: a first-week register simulator where the queue stays visible and dignity is scored separately from speed — because churn is a dignity event.

Why this kit exists

Week-one cashier churn clusters on four untrained moments — the slow payer, the no-receipt return, the party cart, the declined card — not on scanning skills. Training covers tills; it never practices holding dignity and queue pressure in the same instant.

What the artifact does

Four customers embody the four moments, with a visible queue throughout. Scoring explicitly decouples dignity from speed — teaching that calm is usually ALSO the fast path. The loudly-called supervisor failure is taught as its own anti-pattern.

The design decisions worth noticing

• The visible queue — the simulator's engine of realism; the pressure that makes dignity hard is on-screen
• Dignity-speed decoupling — scoring them separately is the design thesis: week-one quits are dignity events
• The deposit-rule scene — policy enforcement WITH a door (the bottle machine) teaches rules without rigidity

Honest limitations

Retention targets are design intentions, not field results. The moments are composites from retail attrition patterns; the simulator is a training surface, not a till.

Part of I Wayan Usada's learning-design portfolio · all clients and scenarios are fictional composites built from realistic domain patterns · drafted with AI assistance and fully rewritten, fact-checked and owned by a human.

Process deliverables

• action-map.md — Action map — the behaviors the artifact must produce, traced to the business goal
• storyboard.md — Text-based storyboard — the scene plan written before build
• visual-mockups.md — Visual mockups & style guide — mood, type, key screens, component decisions